US1109493A - Harrow-tooth. - Google Patents

Description

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l 3 v/ 1% J4 .5 JW/MJ'WWJ Witnesses Inventor,

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Attorneys.

Patented Sept. 1, 1914.

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To mme Be it kIlOWIl that I, W

citizen of the'UnitedStates, residin' at Carlisle, in the countyfofSullivan andtate 'of-Indiana,-l1ave invented a new and useful Harrow-Tooth, of which the following is a specification. 4 y

The present invention appertains to a rovement: over-,1the-:harrow tooth disclosed March 7, 1911.

' forei It is the object of 'thepresent inventionto whereby the tooth'may be conand in formed and disposed, as to most effectively agitate the soil for pulverizing and leveling the same, and to destroy weeds, and other vegetation. i

It is also the object of the present inven: tion to provide a harrow tooth of the'character specified, which shall reduce to a minimum, the tendency of the tooth being clogged with roots, and-other extraneous matter or trash.

- A further object. of the present invention I is to provide a harrow toothwhich may be readily and inexpensively forged from a bar or similar stock.

vWith the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details'of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the in v vention herein disclosed can be made within drawing,

.Fig.

the scope of what 1s claimed without departing-from the spirit of the invention.

The invention has been illustrated in its preferred embodiment in the accompanying wherein Figure 1 isa I proved harrow tooth. Fig. 2 1s a front view thereof. Fig. 3 is fragmental view of the'end of the blade. is a crosssection of the blade taken on the line 5-5 of Fig. 4. Fig.6 is a cross sectionof the shank, takenon the line 6-6 "crin e. v.

The present harrow tooth is preferably formed from a bar or similar stock, similar to the harrow tooth disclosed in the above harrow tooth of unique or novelside elevation of-the ima rear view. Fig. 4 is a,

1 Paaaea t. 1,1914.

fashioned to provide theshank 1 of I tangular or square cross'section, having its upper'end flattened, as at 2, to forma head.

for. retainingthe shank in engagement with tions o twoopposite corners of t e shank 1 1, wh reby; the other ;.oppositej corners. will be-extended to form the head. The-bar is forged. One edge of the blade is relatively while the other edge 5 is relatively sharp and is disposed forwardly, the edge 5 forming acutting edge for engaging the soil. The end 6 of the blade isat rlght' angles to the edges 4 and 5.

The blade 3 is curved to one side of the axis of the shank 1, as seen in Figs. 2 and 3, and is extended angularly rearward from the axis of the shank, as seen in Fig. 1, whereby the corner 7 of the blade between to constitute the tip or nose of the tooth.

portion of the blade is inclined, and that the thick edge of the blade is elevated above the latter feature is of advantage,.inasmuch as the lower end portion of the blade acts in the capacity of a share or deflectin to stir the soil underneath the sur ace.

in rights and lefts, whereby a'plurality of right and left hand harrow teeth may be rangement with respect to one another.

be arranged in series or rows, or may be staggered, whichever maybe desired.

As above intimated, the sharp edge 5 of the blade is displaced forwardly, so as to cut'or sever the soil as the harrow frame is dragged or drawn over the soil, the tip or nose 7 serving to effectively enter the soil; It will be noted thatthe sharpened edge 5 curves rea'rwardly and downwardly, whereroots, trash and the like, clog which is a highly desirable eature. With the blade formed as above defined, the same -The bar or blankis will produce a most effective agitation of [@150 formed to provide the blade 3. depend mg from the shank 1, the blade 3-,being thick, as at 4, and is disposed rearwardly applied to a harrow frame in proper ar-' the harrow. frame, whereby the harrow-tooth '3 will not be'liable towork loose and-become lost. The headQ2 -is preferably formedby vpressin or swaging together, the u per por- I harrow. tooth, and. isv particularly, an 1m i1 in my former Patent No. 985,871, issued,

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the sharp edge 5 and the end 6 is lowermost,

It is also to be noted that the lower end v sharp edge, at the lower endzof the blade, as *1 will be evident from Figs. 2 and 3. This 9 portion, 1

In practice, the harrow teeth, are formed 7 Thus, the right and left handed teeth may by there will be little or no tendency for ing the tooth, a

the soil, whereby the surface of the soil may be pulverized and leveled efficiently.

From the foregoing, taken in connection with the drawing, the advantages incident to the improved harrow tooth, will be obvious to those familiar with the art, and need not be further commented upon.

The shank 1 may not only be of square cross section, but may be diamond shaped or parallelogram in cross section, if desired.

Having thus described the invention, what is claimed as new is A harrow tooth formed from a bar and embodying an upright shank having a depending forged blade, one edge of the blade being relatively sharp and disposed forwardly, and the other edge being relatively thick shank, the lower end portion of the blade being inclined, the corner of the blade between the sharp edge and end being lowermost, to constitute the nose of the tooth, and the thick edge being elevated above the sharp edge at the lower end of the blade.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES VVHIPPS. Witnesses:

F. W. SCHROEDER, JAMES R. PALMER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

, Washington, D. G.

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